The invention relates to an oil-in-water emulsion, an emulsion of oil in a lamellar phase structure foaming water comprising: a) at least one anionic surfactant, b) at least one compound selected from amphoteric surfactants and non-ionic surfactants, and c) at least one oil phase, ▸ in which the total active material of said surfactants is from 0.5 to 30% by weight relative to the total weight of said emulsion, ▸ the ratio of anionic surfactant is from 0.3 to 0.9, the ratio of amphoteric surfactant is from 0.0 to 0.7 and the ratio of non-ionic surfactant is from 0.0 to 0.7, said ratio being the ratio between the weight percentage of the active material of said surfactant in the emulsion and the weight percentage of the total active material of said surfactants in the emulsion, ▸ and the content of said oil is from 50 to 98 % by weight of the total weight of the emulsion, 50% being excluded, ▸ the pH of the composition being between 4 and 8. The invention also relates to the cosmetic use of the emulsion for cleansing the skin and/or skin appendages, a non-therapeutic cosmetic treatment method comprising applying the emulsion to skin and/or skin appendages, and a method of preparing the emulsion.L'invention se rapporte à une émulsion huile dans l'eau huile dans l'eau moussante structurée en phases lamellaires comprenant : a) au moins un tensio-actif anionique, b) au moins un composé choisi parmi les tensio-actifs amphotères et les tensio-actif non-ioniques, et c) au moins une phase huile, ▸ dans laquelle la matière active totale desdits tensio-actifs est comprise de 0,5 à 30% en poids par rapport au poids total de ladite émulsion, ▸ dans laquelle le ratio de tensio-actif anionique est compris de 0,3 à 0,9, le ratio de tensio-actif amphotère est compris de 0,0 à 0,7 et le ratio de tensio-actif non-ionique est compris de 0,0 à 0,7, ledit ratio étant le rapport entre le pourcentage en poids de matière active dudit tensio-actif dans ladite émulsion et le pourcentage en po
